I shot about 29g on a 32g card. Hit the stop button then the change slot button (possibly before the card had finished writing) then record again. There was no indication of error. After the event I went to DL the cards and found odd files and the Contents folder. There were no clips in the Contents, clips 001 folder and I've not been able to recover any readable .mxf files after trying three various recovery programs. The computer says the card has 29GB on it but I can't access it. The camera says "no clips". The second card worked normally. Help.

